Methods and compositions for biorenewable polyesters derived from camphoric acid

Abstract

In one aspect, the disclosure relates to biorenewable polyesters and polyester copolymers derived from camphoric acid, methods of making same, and articles comprising same. The disclosed biorenewable polyesters can have a Mn of from about 5,000 Da to about 500,000 Da. Also disclosed herein is the preparation of various monomers useful in the reactions disclosed herein, e.g., cis-1,4-anhydroerythritol and bis(2-hydroxyethyl) camphorate. In various aspects, the disclosed biorenewable polyesters and polyester copolymers can be used to the production of various articles utilizing a conventional polyester or polyester copolymer, that is, to replace, in part or in whole, a conventional nonbiorenewable polyester or polyester copolymer. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

What is claimed is: 
     
       1. A polyester copolymer having a structure represented by a formula: 
       
         
           
           
               
               
           
         
         wherein R 1  is an erythritan group or an isosorbide group; 
         wherein each occurrence of R 2  is independently selected from hydrogen, C1-C12 alkanediyl, and C3-C12 cycloalkanediyl; 
         wherein R 3  is arylene, wherein the arylene has 6 to 14 carbon atoms; and 
         wherein x and y are not zero, wherein the polyester copolymer has a molecular weight Mw from about 5,000 Da to about 500,000 Da; and 
         wherein the glass transition temperature of the polyester copolymer is at or above 100° C. 
       
     
     
       2. The polyester copolymer of  claim 1 , wherein R 2  is hydrogen.